In Windows and Ubuntu, how to disable build-in webcam of a laptop, so that no app can use it? In some laptops there is webcam disabling option in BIOS.But not available in all.So, there any software of build-in option/tools in OS by which webcam can be fully disabled?
In Windows, you simply go in the
Administrative tools > Computer management > Device manger and find your webcam in the list, usually under the USB controllers. You can right click on it and disable it from there.
In Linux, one answer is here.